Diego Costa trained by himself for the second straight day on Monday as the rest of the Chelsea squad enjoyed time off.
The Blues squad were given two days off by boss Antonio Conte following their 3-0 win at Leicester on Saturday.
Costa did not travel with the squad to the King Power Stadium.
Chelsea players will also return to training on Tuesday morning.
Costa’s injury will continue to be monitored by Chelsea’s medical team and a decision will be made on Tuesday to see if he can return to full training with the rest of the Chelsea squad.